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UCC21738-Q1
  • UCC21738-Q1
  • UCC21738-Q1
  • UCC21738-Q1

UCC21738-Q1

ACTIVE

Automotive 10-A single-channel isolated gate driver for SiC/IGBT, active short-circuit protection

Texas Instruments UCC21738-Q1 Product Info

1 April 2026 1

Parameters

Number of channels

1

Isolation rating

Reinforced

Power switch

IGBT, SiCFET

Withstand isolation voltage (VISO) (Vrms)

5700

Working isolation voltage (VIOWM) (Vrms)

1500

Transient isolation voltage (VIOTM) (VPK)

8000

Peak output current (A)

10

Peak output current (source) (typ) (A)

10

Peak output current (sink) (typ) (A)

10

Features

Active miller clamp, Disable, Enable, Fault reporting, High CMTI, Power good, Short circuit protection, Soft turn-off, Split output

Output VCC/VDD (min) (V)

13

Output VCC/VDD (max) (V)

33

Input supply voltage (min) (V)

3

Input supply voltage (max) (V)

5.5

Propagation delay time (µs)

0.09

Input threshold

CMOS

Operating temperature range (°C)

-40 to 125

Rating

Automotive

Bootstrap supply voltage (max) (V)

2121

Rise time (ns)

33

Fall time (ns)

27

Undervoltage lockout (typ) (V)

12

TI functional safety category

Functional Safety Quality-Managed

Package

SOIC (DW)-16-106.09 mm² 10.3 x 10.3

Features

  • 5.7-kV RMS single channel isolated gate driver
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: -40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 3A
    • Device CDM ESD classification level C6
  • Functional Safety Quality-Managed
  • SiC MOSFETs and IGBTs up to 2121 V pk
  • 33-V maximum output drive voltage (VDD-VEE)
  • ±10-A drive strength and split output
  • 150-V/ns minimum CMTI
  • 270-ns response time fast overcurrent protection
  • External active Miller clamp
  • 900-mA soft turn-off when fault happens
  • ASC input on isolated side to turn on power switch during system fault
  • Alarm FLT on overcurrent and reset from RST/EN
  • Fast enable/disable response on RST/EN
  • Rejects <40-ns noise transient and pulse on input pins
  • 12-V VDD UVLO with power good on RDY
  • Inputs/outputs with over/under-shoot transient voltage immunity up to 5 V
  • 130-ns (maximum) propagation delay and 30-ns (maximum) pulse/part skew
  • SOIC-16 DW package with creepage and clearance distance > 8 mm
  • Operating junction temperature –40°C to 150°C
  • 5.7-kV RMS single channel isolated gate driver
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: -40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 3A
    • Device CDM ESD classification level C6
  • Functional Safety Quality-Managed
  • SiC MOSFETs and IGBTs up to 2121 V pk
  • 33-V maximum output drive voltage (VDD-VEE)
  • ±10-A drive strength and split output
  • 150-V/ns minimum CMTI
  • 270-ns response time fast overcurrent protection
  • External active Miller clamp
  • 900-mA soft turn-off when fault happens
  • ASC input on isolated side to turn on power switch during system fault
  • Alarm FLT on overcurrent and reset from RST/EN
  • Fast enable/disable response on RST/EN
  • Rejects <40-ns noise transient and pulse on input pins
  • 12-V VDD UVLO with power good on RDY
  • Inputs/outputs with over/under-shoot transient voltage immunity up to 5 V
  • 130-ns (maximum) propagation delay and 30-ns (maximum) pulse/part skew
  • SOIC-16 DW package with creepage and clearance distance > 8 mm
  • Operating junction temperature –40°C to 150°C

Description

The UCC21738-Q1 is a galvanic isolated single channel gate driver designed for SiC MOSFETs and IGBTs up to 2121-V DC operating voltage with advanced protection features, best-in-class dynamic performance and robustness. The device has up to ±10-A peak source and sink currents.

The input side is isolated from the output side with SiO 2 capacitive isolation technology, supporting up to 1.5-kV RMS working voltage, 12.8-kV PK surge immunity with longer than 40 years isolation barrier life, as well as providing low part-to-part skew, and >150-V/ns common-mode transient immunity (CMTI).

The UCC21738-Q1 includes the state-of-art protection features, such as fast overcurrent and short circuit detection, shunt current sensing support, fault reporting, active Miller clamp, input and output side power supply UVLO to optimize SiC and IGBT switching behavior and robustness. The ASC feature can be utilized to force ON power switch during system failure events, further increasing the drivers’ versatility and simplifying the system design effort, size, and cost.

The UCC21738-Q1 is a galvanic isolated single channel gate driver designed for SiC MOSFETs and IGBTs up to 2121-V DC operating voltage with advanced protection features, best-in-class dynamic performance and robustness. The device has up to ±10-A peak source and sink currents.

The input side is isolated from the output side with SiO 2 capacitive isolation technology, supporting up to 1.5-kV RMS working voltage, 12.8-kV PK surge immunity with longer than 40 years isolation barrier life, as well as providing low part-to-part skew, and >150-V/ns common-mode transient immunity (CMTI).

The UCC21738-Q1 includes the state-of-art protection features, such as fast overcurrent and short circuit detection, shunt current sensing support, fault reporting, active Miller clamp, input and output side power supply UVLO to optimize SiC and IGBT switching behavior and robustness. The ASC feature can be utilized to force ON power switch during system failure events, further increasing the drivers’ versatility and simplifying the system design effort, size, and cost.

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